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Analog Devices Inc./Maxim Integrated MAX6723UTZGD3+T
- Part No.:
- MAX6723UTZGD3+T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Supervisors
- Package:
- SOT-23-6
- Datasheet:
-
MAX6723UTZGD3+T.pdf
- Description:
- IC SUPERVISOR 3 CHANNEL SOT23-6
- Quantity:
- Payment:
- Shipping:
Inventory:2,500
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Product details
Overview
MAX6723UTZGD3+T from Maxim Integrated is a triple-voltage microprocessor supervisory circuit in 6-pin SOT23 package, monitoring VCC1 (4.625V threshold), VCC2 (3.075V threshold), and RSTIN (626.5mV reference) with 210ms reset timeout. It features open-drain active-low RST output, manual reset input (MR), and watchdog timer support. Used in multivoltage embedded systems requiring reliable power-up sequencing and brownout detection.
For engineers reviewing the MAX6723UTZGD3+T datasheet, MAX6723UTZGD3+T pinout, MAX6723UTZGD3+T application, or MAX6723UTZGD3+T equivalent, key selection criteria include dual-supply monitoring capability, adjustable third-voltage threshold via RSTIN, guaranteed reset validity down to VCC = 0.8V, and compatibility with low-power portable/battery-operated equipment.
Technical Context
The MAX6723UTZGD3+T implements independent voltage comparators for primary (VCC1), secondary (VCC2), and auxiliary (RSTIN) supplies, each with factory-trimmed thresholds and 20ppm/°C tempco. Its reset logic asserts RST low when any monitored voltage falls below its threshold and holds for 210ms min after all voltages recover.
It integrates a dual-mode watchdog timer: 35s startup period post-reset followed by 1.12s normal timeout, triggered by WDI edge transitions. MR input includes internal 50kΩ pullup and 200ns response delay, while RSTIN accepts external resistor-divider networks for custom trip points down to 0.62V.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCC1 Threshold | 4.625V (factory-trimmed, ±125mV tolerance) - ensures reliable reset assertion during 5V rail brownout |
| VCC2 Threshold | 3.075V (factory-trimmed, ±75mV tolerance) - matches common 3.3V I/O supply monitoring requirement |
| RSTIN Reference | 626.5mV internal reference - enables precise third-voltage monitoring (e.g., 1.8V core via 2.87:1 divider) |
| Reset Timeout | 210ms minimum - provides sufficient hold time for slow-starting DC/DC converters and FPGA configuration |
| Supply Current | 14µA typical at 3.6V - supports ultra-low-power battery-backed applications without compromising supervision integrity |
| Operating Temp | -40°C to +85°C - qualified for industrial and telecom equipment operating in uncontrolled environments |
| Reset Output | Open-drain active-low RST - allows wired-OR reset bus sharing and flexible pullup voltage selection |
Pinout & Package
MAX6723UTZGD3+T is housed in a 6-pin SOT23-6 package (1.6mm × 2.9mm × 1.1mm), optimized for space-constrained PCB layouts in portable electronics and dense server modules.
| Pin | Circuit Role | Design Meaning |
|---|---|---|
| 1 | RST | Active-low open-drain reset output - requires external pullup; asserts low on VCC1/VCC2/RSTIN undervoltage or MR activation |
| 2 | GND | Analog/digital ground reference - must be connected to system ground plane for accurate threshold sensing |
| 3 | MR | Active-low manual reset input - internal 50kΩ pullup to VCC1; 1µs minimum pulse width required for reliable assertion |
| 4 | VCC2 | Secondary supply input - powers internal circuitry when VCC2 > VCC1; sets VCC2 reset threshold (3.075V) |
| 5 | VCC1 | Primary supply input - powers device when VCC1 > VCC2; sets VCC1 reset threshold (4.625V) |
| 6 | RSTIN | Adjustable reset comparator input - high-impedance node referenced to 626.5mV internal reference for third-voltage monitoring |
Key Features
| Feature | Design Value |
|---|---|
| Triple-voltage monitoring | Simultaneous supervision of VCC1 (4.625V), VCC2 (3.075V), and RSTIN (626.5mV ref) eliminates need for discrete comparators and reduces BOM count |
| Dual-mode watchdog timer | 35s startup window allows full system boot before enabling 1.12s runtime monitoring - prevents false resets during initialization |
| Guaranteed reset validity | Operates correctly with VCC1 or VCC2 ≥ 0.8V - ensures deterministic reset behavior during deep brownout conditions |
| Low supply current | 14µA typical at 3.6V - extends battery life in always-on monitoring applications without sacrificing supervision accuracy |
| Immunity to VCC transients | Withstands ≤20µs negative-going glitches at 100mV overdrive - avoids spurious resets in electrically noisy industrial environments |
Applications
| Telecom Power Management | Industrial PLC Controller |
|---|---|
|
Use Scenario: Monitoring primary 5V backplane supply and secondary 3.3V I/O rail in carrier-grade Ethernet switches. IC Role / Device Role / Timing Role: Dual-supply supervisor asserting reset if either rail drops below specification during hot-swap events or load transients. Use Value: Prevents firmware corruption by ensuring µP remains held in reset until both supplies stabilize within 210ms timeout window. |
Use Scenario: Supervising 24V-to-5V DC/DC output and isolated 3.3V logic supply in programmable logic controller I/O modules. IC Role / Device Role / Timing Role: Triple-voltage monitor using RSTIN to track auxiliary 12V sensor bias supply via resistor divider. Use Value: Enables single-chip supervision of three critical rails, reducing board area and eliminating discrete voltage detector ICs. |
| Portable Medical Device | Battery-Powered IoT Node |
|
Use Scenario: Ensuring clean power-up sequence for ARM Cortex-M4 MCU and analog front-end in handheld ultrasound probe. IC Role / Device Role / Timing Role: Low-current (14µA) supervisor maintaining reset state during Li-ion battery discharge from 4.2V to 3.0V. Use Value: Guarantees valid reset assertion down to 0.8V VCC - critical for fail-safe shutdown when battery reaches end-of-life voltage. |
Use Scenario: Monitoring coin-cell-powered 3.0V supply and regulated 1.8V MCU core voltage in wireless sensor endpoint. IC Role / Device Role / Timing Role: Open-drain RST output shared across multiple peripherals on common reset bus with 10kΩ pullup to 3.0V. Use Value: Eliminates need for level-shifting reset buffers while supporting mixed-voltage domain reset coordination. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar triple-voltage supervisory applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX6724UTZGD3+T | Push-pull RST output instead of open-drain; identical thresholds, timeout, and pinout | Requires direct connection to µP reset pin without external pullup; unsuitable for wired-OR reset buses | Select when driving a single µP with dedicated reset line and no shared reset bus requirements |
| TPS3808G33DBVR | Dual-supply only (VDD = 3.3V, threshold = 3.08V); no RSTIN input; 200ms timeout; SOT23-6 | Lacks third-voltage monitoring capability; no watchdog or manual reset inputs | Choose when only two-rail supervision is needed and system design excludes auxiliary voltage monitoring |
Compared with MAX6723UTZGD3+T, MAX6724UTZGD3+T offers push-pull drive for simpler µP interface but sacrifices reset bus flexibility, while TPS3808G33DBVR reduces feature set to lower cost and complexity at the expense of triple-monitoring capability.
Availability
MAX6723UTZGD3+T is available at Aetrix Electronics and suitable for telecom power management, industrial PLC controllers, and portable medical devices requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for MAX6723UTZGD3+T includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.
Manufacturer
Maxim Integrated (now part of Analog Devices) designs precision analog and mixed-signal ICs for demanding industrial, automotive, and communications applications.
The MAX6715–MAX6729 family delivers ultra-low-voltage supervisory circuits targeting multivoltage embedded systems where reliability, small footprint, and low quiescent current are essential.
FAQ
What is the exact reset threshold voltage for VCC1 on the MAX6723UTZGD3+T?
The MAX6723UTZGD3+T has a factory-trimmed VCC1 reset threshold of 4.625V, with a tolerance of ±125mV (4.500V to 4.750V) over temperature. This value is encoded in the "ZG" suffix per Maxim's Reset Voltage Threshold Suffix Guide and is verified across the -40°C to +85°C operating range.
Does the MAX6723UTZGD3+T support watchdog functionality?
Yes, the MAX6723UTZGD3+T includes a dual-mode watchdog timer with a 35s minimum startup period after reset and a 1.12s minimum normal timeout period. The WDI input monitors processor activity and triggers reset if no edge transition occurs within the timeout window, and it is fully functional on this variant per the Selector Guide.
What is the function of the RSTIN pin on the MAX6723UTZGD3+T?
The RSTIN pin on the MAX6723UTZGD3+T serves as an adjustable reset comparator input with a precise 626.5mV internal reference. It enables monitoring of a third supply voltage (e.g., 1.8V core) using an external resistor divider, extending supervision beyond the fixed VCC1 and VCC2 rails without additional components.
Is the reset output of the MAX6723UTZGD3+T push-pull or open-drain?
The MAX6723UTZGD3+T features an open-drain active-low RST output, as confirmed by the Selector Guide and Pin Description table. This configuration requires an external pullup resistor and supports wired-OR reset bus architectures commonly used in multi-IC systems.
What package type and pin count does the MAX6723UTZGD3+T use?
The MAX6723UTZGD3+T is supplied in a 6-pin SOT23-6 package (1.6mm × 2.9mm × 1.1mm body), consistent with Maxim's ordering information for the UT-series variants. This compact outline supports high-density PCB layouts in space-constrained applications like portable electronics and modular telecom hardware.
MAX6723UTZGD3+T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- SOT-23-6
- Packaging:
- Bulk
- Product Status:
- Obsolete
- Programmable:
- Not Verified
- Type:
- Multi-Voltage Supervisor
- Number of Voltages Monitored:
- 3
- Voltage - Threshold:
- 1.11V, 2.313V, Adj
- Output:
- Open Drain or Open Collector
- Reset:
- Active Low
- Reset Timeout:
- 140ms Minimum
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-6
MAX6723UTZGD3+T FAQ
1.How can I place an order for MAX6723UTZGD3+T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX6723UTZGD3+T on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for MAX6723UTZGD3+T reliable?
The price and inventory of MAX6723UTZGD3+T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX6723UTZGD3+T is usually 5 days.
3.What payment methods are accepted for MAX6723UTZGD3+T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX6723UTZGD3+T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX6723UTZGD3+T?
MAX6723UTZGD3+T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX6723UTZGD3+T order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for MAX6723UTZGD3+T?
For technical support, including MAX6723UTZGD3+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX6723UTZGD3+T requirements.
6.How does Aetrix verify that MAX6723UTZGD3+T is sourced from the original manufacturer or authorized distributors?
All MAX6723UTZGD3+T products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that MAX6723UTZGD3+T meets industry standards.
7.What is the process for return or replacement of MAX6723UTZGD3+T?
All MAX6723UTZGD3+T units undergo pre-shipment inspection (PSI). If there is an issue with MAX6723UTZGD3+T, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The MAX6723UTZGD3+T part is unused and in its original packaging.
Return procedure for MAX6723UTZGD3+T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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